5440689 has 10 divisors (see below), whose sum is σ = 8127570. Its totient is φ = 3627072.

The previous prime is 5440657. The next prime is 5440703. The reversal of 5440689 is 9860445.

It can be written as a sum of positive squares in only one way, i.e., 3920400 + 1520289 = 1980^2 + 1233^2 .

It is not a de Polignac number, because 5440689 - 2⁵ = 5440657 is a prime.

It is an Ulam number.

It is a Curzon number.

5440689 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5440619) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 33504 + ... + 33665.

It is an arithmetic number, because the mean of its divisors is an integer number (812757).

Almost surely, 2^5440689 is an apocalyptic number.

It is an amenable number.

5440689 is a deficient number, since it is larger than the sum of its proper divisors (2686881).

5440689 is an equidigital number, since it uses as much as digits as its factorization.

5440689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67181 (or 67172 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 5440689 is about 2332.5284564181. The cubic root of 5440689 is about 175.8806116112.

The spelling of 5440689 in words is "five million, four hundred forty thousand, six hundred eighty-nine".